I like a 3.44 and Mk2 S gears- but when I put Barney's K box together for the 1293, I had neither handy. So he's getting stock Mini-K ratios and a 3.647 diff. Won't do much freeway running though! Should go up hills OK..
When I stripped the box, it had a 3.765 in there.. so that's now going in my SCCR box!

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

the area's where i marked ? can u help fill me in doc. as u have built the most engines here and ur the king at mini knowledge i'd like ur input especially

No I've not built that many Mini motors, TheMiniMan (Matt Read) gets that accolade by heaps.

But here are my guesses-
pistons = Hypatecs, you can get standard oversizes +.020-40-60, or 73mm (1360cc) or 73.5mm (1380cc).
dizzy = Nissan Pulsar D4R85
cam = Russell Engineering RE-13
carby = 45DCOE Weber or 45DHLA Dellorto
crank = Crack test, measure, grind if needed
balancing = required? Good idea- do the clutch, flywheel & balancer too, as well as the crank.
centre oil pick up = yes
diff ratio = 4K revs won't hurt it, I'd run a 3.44 on the street.
diff = lsd, is it worth it? I'd forget it for street use
head = 12g940 what sort of head work? 35.6mm inlets, get head ported to suit or buy Vizard's yellow book and do it yourself. Deck the head to get around 10.0:1 C/R
extractors = lcb's
disc brakes = honda standard size which is?? 9.1" approx.

I would add- crack test the rods, check them for straightness, balance them, fit new ARP rod bolts & nuts. If they are 1100S big journal rods, get them lightened.

And, if you want a bit more power up high fit 1.5 rockers.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

thx digger

Do the 1.5 rockers only make a difference up high? I was thinking of trying to get some for my 1275 clubman but I was more interested in low down power. And 1.5 roller rockers are a bit much for my wallet for a fair while yet.
I had read that the A series really appreciates increased valve lift and this seemed the easiest and best way to do this without sacrificing low end (as you might a bit with a cam grind/increased overlap) . Would you recieve any/much of a benefit from fitting 1.5 rockers and leaving the cam standard (at least until I have the engine out so I can get the cam ground, but I have no idea when that will be)
Am I on the wrong track here? Did MadMatt say something about Corrolla rockers

Thanks, Arrin

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Roads need more corners
A Deluxe(CG13DE), 2 Clubbies(998 and 1275) and 2 Morris 1100Ss

if I'm not mistaken Doc said in another post that he's got the corolla rockers ready to roll - I'm waiting for a howto, cos my motor is definitely missing out on them

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did I tell you that I won a trophy?

1.5 rockers with a stock camshaft will be like putting a mild cam in.
Cheaper to get a decent cam...

I have run my 1310 with and without them. Benefit is mainly felt over 4000 rpm. I'm running a cam with approx. 270*/286" duration.
Similar effect was had with my old cam (Cantech VP3)- had similar duration.

There are 3 types of 1.5 rockers-
1. Forged or cast ones, made by MiniSpares or Avonbar (both UK).
2. Roller tipped ones, MiniSpares or MiniSport.
3. Full roller ones, Titan and others.

Personally I consider all the roller ones overkill for the street, and the forged ones are stronger (and cheaper). I've had a set of these in now for about 3+ years. No guide wear, no problems at all. But they cost over $500 here now. Import is a bit cheaper.

It is `possible' to fit modified 1.3L Corolla rockers. But there's about a day's worth of machining work to make them fit. I know this, as I just finished a set.
Not tried them yet (soon!!) but I've seen race Minis using them.
Here's a pic...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Hey Who hows the surgery going??

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12 Months ?????????????

Kev they do look sweet don't they...I have mine in waiting

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Stop Licking the Dog...I Don't Care Who Started It

Thanks Kev,

I might get around to doing rockers and a cam at some stage the 1275 is a longer term project and I first have to sort out the weber that's on it. (plugs foul and it drops back to 3 cylinders, idle jets too rich ) and this morning I looked and there is bubbles coming out around between the head and the block so I figure I have a stuffed head gasket as well
Oh well I have my 998 to get my mini fix
My old man is a fitter and turner maybe I can get him to do a set of the corrolla rockers for me (he's also a mechanic so pretty handy all in all)

Bye, Arrin

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Roads need more corners
A Deluxe(CG13DE), 2 Clubbies(998 and 1275) and 2 Morris 1100Ss

PM sent.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

WhoDat r u there??? Hows the surgery goin??

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12 Months ?????????????

We're getting there Chris.

Engine out, bay stripped bare, just finishing off sanding back and should be ready for the first coat[s?] of paint by the weekend. On the other front, the 1275 donor was delvered to the mechanic today, and it's prep starts on the weekend. should be back on the road round end of Jan.

Cheers Dat

Have you thought about the Aldon Ignitor setup that drops in a standard Mini Dizzy. Put one in mine (pointless dizzy) and the spark is amazing, will jump ove an inch when you remove the lead from the spark plug. Pretty cheap but can't remember the full price.

Cheers M

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225hp atw on 14psi. 1/4 Mile no idea. Take one 1971 Mini Clubman, one Starlet GT Halfcut, Simmer over a warm MIG Welder, and Voila Minstar! www.mpdesign.id.au

Aldon ignitor is same as a `Pertronix' ignitor.
Cost a fortune here, but only US$69.95 from http://www.vintageperformance.com/retro ... /lucas.htm
Postage is US$ 7.00 and takes a week to your door.

I took mine out in favour of a Pulsar dizzy, I just sold it to Ozmotorsport.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.